1. Name:_______________________ Date ________
Living Environment Rabbi Goldberg
The Respiratory System: the exchange of gases
I. Passageways and Lungs
A. respiratory system consists of
- a _____________________
- a system _____________________________
B. Breathing is
____________________________________________________
II. The path air takes
A. air enters
______________________________________________________
a. The nasal cavity is exposed to the air through the
________________
i. It is lined with __________________________
1. this helps ____________,_____________,
_________________ the air
B. It passes through the
___________________________________________
a. This is where the Digestive system and the respiratory
systems meet.
i. It is the job of the ______________- to
_____________________________________________
_
b. It then goes into the _________________________
i. The trachea is the ______________________________
c. The trachea forks to form
________________________________
d. Each bronchus branches ___________________________
e. The bronchioles end in clusters
_______________________________

2. III.Alveoli: The place of gas exchange
A. Alveoli
:___________________________________________________
___________________________________________________
___________________________________________________
B. surrounded by _______________________________________.
a. External respiration___________________________________
b. Cellular respiration: ___________________________________
IV.Blood transport of gases
A. oxygen diffuses into the
_________________________________________
B. it is pumped _____________________________________
a. , where it is used for
______________________________________
C. carbon dioxide (a waste product) diffuses
________________________________________________________
________________________________________________________
_____________
D. During exhalation, this
___________________________________________

3. V. Breathing ventilates the lungs
A. The action of your
________________________________________________________
________________________________________________________
________________________________________________________
___________________
B. Breathing is the alternation
________________________________________
________________________________________________________
VII. Control of Respiration
A. Breathing is usually an _____________________________________
a. Involuntary means ________________________________.
B. partially controlled by an internal feedback mechanism that involves
________________________________________________________
________________________________________________________
______________
C. medulla oblongata
________________________________________________________
________________________________________________________
_____________
a. Nerve signals cause these muscles to contract, and you inhale.
VIII. Cleaning dirty air
A. To prevent foreign material from reaching
___________________________________________________
___________________________________________________
___________
a. The cilia constantly
___________________________________________________
___________________________________________________
___________________________________________________
___________________________________________________
________________________